Тип сущности 'tbl_DoctorEducationDetails' требует определения первичного ключа. при вызове логина контроллера

Question

введите код здесь # Контроллер

   public ActionResult DoctorLogin(tbl_DoctorPersonalDetail admin)
    {
        var key = GetKey();
        admin.str_Password = EncryptString(key, admin.str_Password);

        var _admin = db.tbl_DoctorPersonalDetails.Where(s => s.str_UserName == admin.str_Password);
        if (_admin.Any())
        {
            if (_admin.Where(s => s.str_UserName == admin.str_Password).Any())
            {
                return RedirectToAction("WelcomePage");
            }
            else
            {
                return Json(new { status = false, message = "Invalid Password!" });
            }
        }
        else
        {
            return Json(new { status = false, message = "Invalid Email!" });
        }
    }

# DBContext

public class EmployeeContext : DbContext
{
    public EmployeeContext(DbContextOptions<EmployeeContext> options) : base(options)
    {

    }
    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
    }

    public virtual DbSet<Helath> Helaths { get; set; }
    public virtual DbSet<Patient> Patients { get; set; }
    public virtual DbSet<tbl_DoctorEducationDetails> tbl_DoctorEducationDetails { get; set; }
    public virtual DbSet<tbl_DoctorPersonalDetail> tbl_DoctorPersonalDetails { get; set; }
    public virtual DbSet<tbl_EmployeeDetail> tbl_EmployeeDetail { get; set; }
    public virtual DbSet<tbl_Experiance> tbl_Experiance { get; set; }

Модель

public partial class tbl_DoctorPersonalDetail
{
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]

        public tbl_DoctorPersonalDetail()
        {
            this.tbl_DoctorEducationDetails = new HashSet<tbl_DoctorEducationDetails>();
            this.tbl_Experiance = new HashSet<tbl_Experiance>();
        }

        [Key]
        public int lng_DoctorID { get; set; }

        public string str_DoctorName { get; set; }
        public int lng_Age { get; set; }
        public string str_dob { get; set; }
        public string str_FatherName { get; set; }
        public string str_MotherName { get; set; }
        public string str_SpouseName { get; set; }
        public string str_Address { get; set; }
        public string str_ContactNo { get; set; }
        public string str_Email { get; set; }
        public string str_UserName { get; set; }
        public string str_Password { get; set; }


        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<tbl_DoctorEducationDetails> tbl_DoctorEducationDetails { get; set; }
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<tbl_Experiance> tbl_Experiance { get; set; }
}

Тип сущности 'tbl_DoctorEducationDetails' требует определения первичного ключа, показывающего эту ошибку